I had no prob finding it..maybe it was because the register/login fields are smack in teh middle of the screen and this one was on the upper left hand corner of the screen?

Oh, I see now why it was hard for me to find but not for chewy and others. On the main iistix.com page, there are “login | register” links on the upper left navigation bar. But, if you click on “Forum”, the “login | register” link is not on the navigation bar on the Forum page.